44 HOPS. 



VI. In case the growth of a bract or bracteole is 

 retarded, it may become more or less deeply divided. 



Very little is known as to the causes of the deviations 

 classed tinder I. to V. According to the observations of 

 Kraus, the formation of barren cones, which appear here and 

 there every year, is most frequently met with in wet seasons, 

 and after copious dressings with nitrogenous manures. 



Pig. 17. — Prolongation of cone. 



Should deviations of this kind be frequent in any hop 

 garden, the ground must be drained ; or, if necessary, some 

 restrictions placed on the application of nitrogenous manure. 

 The phenomenon noticeable in some years of certain plants 

 putting forth blossoms but no cones, as also the occurrence 

 of deformed leaves, are deviations the causes of which have 

 not yet been investigated. 



